Information for Subjects
		General Information
		Contact Xlab Office: University of California, Berkeley Experimental Social Science Laboratory F502 Haas School of Business # 1922 Berkeley, CA 94720-1922  Phone: 510-642-8780 Fax: 510-642-5018 xlab@econ.berkeley.edu Lab Location: S460 Haas School of Business

designing your experiment:

It is widely known by researchers that the manner in which an experiment is conducted is of paramount importance. We ask that researchers review the Xlab guidelines relating the design choices that we expect experimenters to practice when using the Xlab subject pool and infrastructure.

Incentives: Paying subjects for their participation is the norm in experimental economics. Human subjects are paid under federal guidelines that are enforced by Institutional Review Boards. Earnings depend partly on subjects' decisions and partly on chance. The amount paid depends on the experiment run, the decisions made by the subject, and the decision made by the other subjects in the experiment. When using the Xlab's subject pool, researchers should not abandon the practice of paying performance-based monetary incentives.

Clear instructions: Experimental instructions tell subjects what they need to know. We strongly encourage researchers to read instructions out loud at the beginning of a session to establish public knowledge. This is also scientifically very useful, because a clear instructional script will enable precise replication. Alternative methods are acceptable as long as they are replicable; for example, display the instructions on a series of screens and have subjects click through the screens as you read the instructions.

Anonymity: Participation in experiments is voluntary. Any information about human subjects (e.g., personal, earnings in a session, decision data) will be kept strictly confidential. Subjects will be paid immediately following the end of a session. In addition, unless otherwise stated explicitly, researchers will in principle be designed to make it as difficult as possible for subjects to know precisely who they are playing with. There may be exceptions, such as with group decision making experiments.

administrative services
human subjects
	CPHS approved documents
	list of experiments
	requirements for eProtocol
	UCB privacy statement
grants
designing your experiment
technology support
	hardware in the lab
	software in the lab
	using your own software
scheduling experiments
xlab calendar
faq for researchers